/*

Simple DirectMedia Layer

Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>

This software is provided 'as-is', without any express or implied

warranty. In no event will the authors be held liable for any damages

arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,

including commercial applications, and to alter it and redistribute it

freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not

claim that you wrote the original software. If you use this software

in a product, an acknowledgment in the product documentation would be

appreciated but is not required.

2. Altered source versions must be plainly marked as such, and must not be

misrepresented as being the original software.

3. This notice may not be removed or altered from any source distribution.

*/

#include "SDL_config.h"

#if SDL_VIDEO_DRIVER_WINDOWS

#include "SDL_assert.h"

#include "../SDL_sysvideo.h"

#include "../SDL_pixels_c.h"

#include "../../events/SDL_keyboard_c.h"

#include "SDL_windowsvideo.h"

#include "SDL_windowswindow.h"

/* Dropfile support */

#include <shellapi.h>

/* This is included after SDL_windowsvideo.h, which includes windows.h */

#include "SDL_syswm.h"

/* Windows CE compatibility */

#ifndef SWP_NOCOPYBITS

#define SWP_NOCOPYBITS 0

#endif

/* Fake window to help with DirectInput events. */

HWND SDL_HelperWindow = NULL;

static WCHAR *SDL_HelperWindowClassName = TEXT("SDLHelperWindowInputCatcher");

static WCHAR *SDL_HelperWindowName = TEXT("SDLHelperWindowInputMsgWindow");

static ATOM SDL_HelperWindowClass = 0;

#define STYLE_BASIC (WS_CLIPSIBLINGS | WS_CLIPCHILDREN)

#define STYLE_FULLSCREEN (WS_POPUP)

#define STYLE_BORDERLESS (WS_POPUP)

#define STYLE_NORMAL (WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_MINIMIZEBOX)

#define STYLE_RESIZABLE (WS_THICKFRAME | WS_MAXIMIZEBOX)

#define STYLE_MASK (STYLE_FULLSCREEN | STYLE_BORDERLESS | STYLE_NORMAL | STYLE_RESIZABLE)

static DWORD

GetWindowStyle(SDL_Window * window)

{

DWORD style = 0;

if (window->flags & SDL_WINDOW_FULLSCREEN) {

style |= STYLE_FULLSCREEN;

} else {

if (window->flags & SDL_WINDOW_BORDERLESS) {

style |= STYLE_BORDERLESS;

} else {

style |= STYLE_NORMAL;

}

if (window->flags & SDL_WINDOW_RESIZABLE) {

style |= STYLE_RESIZABLE;

}

}

return style;

}

static void

WIN_SetWindowPositionInternal(_THIS, SDL_Window * window, UINT flags)

{

HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;

RECT rect;

DWORD style;

HWND top;

BOOL menu;

int x, y;

int w, h;

/* Figure out what the window area will be */

if (SDL_ShouldAllowTopmost() && (window->flags & (SDL_WINDOW_FULLSCREEN|SDL_WINDOW_INPUT_FOCUS)) == (SDL_WINDOW_FULLSCREEN|SDL_WINDOW_INPUT_FOCUS)) {

top = HWND_TOPMOST;

} else {

top = HWND_NOTOPMOST;

}

style = GetWindowLong(hwnd, GWL_STYLE);

rect.left = 0;

rect.top = 0;

rect.right = window->w;

rect.bottom = window->h;

menu = (style & WS_CHILDWINDOW) ? FALSE : (GetMenu(hwnd) != NULL);

AdjustWindowRectEx(&rect, style, menu, 0);

w = (rect.right - rect.left);

h = (rect.bottom - rect.top);

x = window->x + rect.left;

y = window->y + rect.top;

SetWindowPos(hwnd, top, x, y, w, h, flags);

}

static int

SetupWindowData(_THIS, SDL_Window * window, HWND hwnd, SDL_bool created)

{

SDL_VideoData *videodata = (SDL_VideoData *) _this->driverdata;

SDL_WindowData *data;

/* Allocate the window data */

if (!data) {

return SDL_OutOfMemory();

}

data->window = window;

data->hwnd = hwnd;

data->hdc = GetDC(hwnd);

data->created = created;

data->mouse_button_flags = 0;

data->videodata = videodata;

window->driverdata = data;

/* Associate the data with the window */

if (!SetProp(hwnd, TEXT("SDL_WindowData"), data)) {

ReleaseDC(hwnd, data->hdc);

SDL_free(data);

return WIN_SetError("SetProp() failed");

}

/* Set up the window proc function */

#ifdef GWLP_WNDPROC

data->wndproc = (WNDPROC) GetWindowLongPtr(hwnd, GWLP_WNDPROC);

if (data->wndproc == WIN_WindowProc) {

data->wndproc = NULL;

} else {

SetWindowLongPtr(hwnd, GWLP_WNDPROC, (LONG_PTR) WIN_WindowProc);

}

#else

data->wndproc = (WNDPROC) GetWindowLong(hwnd, GWL_WNDPROC);

if (data->wndproc == WIN_WindowProc) {

data->wndproc = NULL;

} else {

SetWindowLong(hwnd, GWL_WNDPROC, (LONG_PTR) WIN_WindowProc);

}

#endif

/* Fill in the SDL window with the window data */

{

RECT rect;

if (GetClientRect(hwnd, &rect)) {

int w = rect.right;

int h = rect.bottom;

if ((window->w && window->w != w) || (window->h && window->h != h)) {

WIN_SetWindowPositionInternal(_this, window, SWP_NOCOPYBITS | SWP_NOZORDER | SWP_NOACTIVATE);

} else {

window->w = w;

window->h = h;

}

}

}

{

POINT point;

point.x = 0;

point.y = 0;

if (ClientToScreen(hwnd, &point)) {

window->x = point.x;

window->y = point.y;

}

}

{

DWORD style = GetWindowLong(hwnd, GWL_STYLE);

if (style & WS_VISIBLE) {

window->flags |= SDL_WINDOW_SHOWN;

} else {

window->flags &= ~SDL_WINDOW_SHOWN;

}

if (style & (WS_BORDER | WS_THICKFRAME)) {

window->flags &= ~SDL_WINDOW_BORDERLESS;

} else {

window->flags |= SDL_WINDOW_BORDERLESS;

}

if (style & WS_THICKFRAME) {

window->flags |= SDL_WINDOW_RESIZABLE;

} else {

window->flags &= ~SDL_WINDOW_RESIZABLE;

}

#ifdef WS_MAXIMIZE

if (style & WS_MAXIMIZE) {

window->flags |= SDL_WINDOW_MAXIMIZED;

} else

#endif

{

window->flags &= ~SDL_WINDOW_MAXIMIZED;

}

#ifdef WS_MINIMIZE

if (style & WS_MINIMIZE) {

window->flags |= SDL_WINDOW_MINIMIZED;

} else

#endif

{

window->flags &= ~SDL_WINDOW_MINIMIZED;

}

}

if (GetFocus() == hwnd) {

window->flags |= SDL_WINDOW_INPUT_FOCUS;

SDL_SetKeyboardFocus(data->window);

if (window->flags & SDL_WINDOW_INPUT_GRABBED) {

RECT rect;

GetClientRect(hwnd, &rect);

ClientToScreen(hwnd, (LPPOINT) & rect);

ClientToScreen(hwnd, (LPPOINT) & rect + 1);

ClipCursor(&rect);

}

}

/* Enable multi-touch */

if (videodata->RegisterTouchWindow) {

videodata->RegisterTouchWindow(hwnd, (TWF_FINETOUCH|TWF_WANTPALM));

}

/* Enable dropping files */

DragAcceptFiles(hwnd, TRUE);

/* All done! */

return 0;

}

int

WIN_CreateWindow(_THIS, SDL_Window * window)

{

HWND hwnd;

RECT rect;

DWORD style = STYLE_BASIC;

int x, y;

int w, h;

style |= GetWindowStyle(window);

/* Figure out what the window area will be */

rect.left = window->x;

rect.top = window->y;

rect.right = window->x + window->w;

rect.bottom = window->y + window->h;

AdjustWindowRectEx(&rect, style, FALSE, 0);

x = rect.left;

y = rect.top;

w = (rect.right - rect.left);

h = (rect.bottom - rect.top);

hwnd =

CreateWindow(SDL_Appname, TEXT(""), style, x, y, w, h, NULL, NULL,

SDL_Instance, NULL);

if (!hwnd) {

return WIN_SetError("Couldn't create window");

}

WIN_PumpEvents(_this);

if (SetupWindowData(_this, window, hwnd, SDL_TRUE) < 0) {

DestroyWindow(hwnd);

return -1;

}

#if SDL_VIDEO_OPENGL_WGL

if (window->flags & SDL_WINDOW_OPENGL) {

if (WIN_GL_SetupWindow(_this, window) < 0) {

WIN_DestroyWindow(_this, window);

return -1;

}

}

#endif

return 0;

}

int

WIN_CreateWindowFrom(_THIS, SDL_Window * window, const void *data)

{

HWND hwnd = (HWND) data;

LPTSTR title;

int titleLen;

/* Query the title from the existing window */

titleLen = GetWindowTextLength(hwnd);

title = SDL_stack_alloc(TCHAR, titleLen + 1);

if (title) {

titleLen = GetWindowText(hwnd, title, titleLen);

} else {

titleLen = 0;

}

if (titleLen > 0) {

window->title = WIN_StringToUTF8(title);

}

if (title) {

SDL_stack_free(title);

}

if (SetupWindowData(_this, window, hwnd, SDL_FALSE) < 0) {

return -1;

}

return 0;

}

void

WIN_SetWindowTitle(_THIS, SDL_Window * window)

{

HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;

LPTSTR title;

if (window->title) {

title = WIN_UTF8ToString(window->title);

} else {

title = NULL;

}

SetWindowText(hwnd, title ? title : TEXT(""));

}

void

WIN_SetWindowIcon(_THIS, SDL_Window * window, SDL_Surface * icon)

{

HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;

HICON hicon = NULL;

BYTE *icon_bmp;

int icon_len, y;

SDL_RWops *dst;

/* Create temporary bitmap buffer */

icon_len = 40 + icon->h * icon->w * 4;

icon_bmp = SDL_stack_alloc(BYTE, icon_len);

dst = SDL_RWFromMem(icon_bmp, icon_len);

if (!dst) {

SDL_stack_free(icon_bmp);

return;

}

/* Write the BITMAPINFO header */

SDL_WriteLE32(dst, 40);

SDL_WriteLE32(dst, icon->w);

SDL_WriteLE32(dst, icon->h * 2);

SDL_WriteLE16(dst, 1);

SDL_WriteLE16(dst, 32);

SDL_WriteLE32(dst, BI_RGB);

SDL_WriteLE32(dst, icon->h * icon->w * 4);

SDL_WriteLE32(dst, 0);

SDL_WriteLE32(dst, 0);

SDL_WriteLE32(dst, 0);

SDL_WriteLE32(dst, 0);

/* Write the pixels upside down into the bitmap buffer */

SDL_assert(icon->format->format == SDL_PIXELFORMAT_ARGB8888);

y = icon->h;

while (y--) {

Uint8 *src = (Uint8 *) icon->pixels + y * icon->pitch;

SDL_RWwrite(dst, src, icon->pitch, 1);

}

hicon = CreateIconFromResource(icon_bmp, icon_len, TRUE, 0x00030000);

SDL_RWclose(dst);

SDL_stack_free(icon_bmp);

/* Set the icon for the window */

SendMessage(hwnd, WM_SETICON, ICON_SMALL, (LPARAM) hicon);

/* Set the icon in the task manager (should we do this?) */

SendMessage(hwnd, WM_SETICON, ICON_BIG, (LPARAM) hicon);

}

void

WIN_SetWindowPosition(_THIS, SDL_Window * window)

{

WIN_SetWindowPositionInternal(_this, window, SWP_NOCOPYBITS | SWP_NOSIZE | SWP_NOACTIVATE);

}

void

WIN_SetWindowSize(_THIS, SDL_Window * window)

{

WIN_SetWindowPositionInternal(_this, window, SWP_NOCOPYBITS | SWP_NOMOVE | SWP_NOACTIVATE);

}

void

WIN_ShowWindow(_THIS, SDL_Window * window)

{

HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;

ShowWindow(hwnd, SW_SHOW);

}

void

WIN_HideWindow(_THIS, SDL_Window * window)

{

HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;

ShowWindow(hwnd, SW_HIDE);

}

void

WIN_RaiseWindow(_THIS, SDL_Window * window)

{

WIN_SetWindowPositionInternal(_this, window, SWP_NOCOPYBITS | SWP_NOMOVE | SWP_NOSIZE);

/* Raising the window while alt-tabbed can cause it to be minimized for some reason? */

WIN_RestoreWindow(_this, window);

}

void

WIN_MaximizeWindow(_THIS, SDL_Window * window)

{

HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;

ShowWindow(hwnd, SW_MAXIMIZE);

}

void

WIN_MinimizeWindow(_THIS, SDL_Window * window)

{

HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;

ShowWindow(hwnd, SW_MINIMIZE);

}

void

WIN_SetWindowBordered(_THIS, SDL_Window * window, SDL_bool bordered)

{

HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;

DWORD style = GetWindowLong(hwnd, GWL_STYLE);

if (bordered) {

style &= ~STYLE_BORDERLESS;

style |= STYLE_NORMAL;

} else {

style &= ~STYLE_NORMAL;

style |= STYLE_BORDERLESS;

}

SetWindowLong(hwnd, GWL_STYLE, style);

WIN_SetWindowPositionInternal(_this, window, SWP_NOCOPYBITS | SWP_FRAMECHANGED | SWP_NOREPOSITION | SWP_NOZORDER |SWP_NOACTIVATE | SWP_NOSENDCHANGING);

}

void

WIN_RestoreWindow(_THIS, SDL_Window * window)

{

HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;

ShowWindow(hwnd, SW_RESTORE);

}

void

WIN_SetWindowFullscreen(_THIS, SDL_Window * window, SDL_VideoDisplay * display, SDL_bool fullscreen)

{

SDL_WindowData *data = (SDL_WindowData *) window->driverdata;

HWND hwnd = data->hwnd;

RECT rect;

SDL_Rect bounds;

DWORD style;

HWND top;

BOOL menu;

int x, y;

int w, h;

if (SDL_ShouldAllowTopmost() && (window->flags & (SDL_WINDOW_FULLSCREEN|SDL_WINDOW_INPUT_FOCUS)) == (SDL_WINDOW_FULLSCREEN|SDL_WINDOW_INPUT_FOCUS)) {

top = HWND_TOPMOST;

} else {

top = HWND_NOTOPMOST;

}

style = GetWindowLong(hwnd, GWL_STYLE);

style &= ~STYLE_MASK;

style |= GetWindowStyle(window);

WIN_GetDisplayBounds(_this, display, &bounds);

if (fullscreen) {

x = bounds.x;

y = bounds.y;

w = bounds.w;

h = bounds.h;

} else {

rect.left = 0;

rect.top = 0;

rect.right = window->windowed.w;

rect.bottom = window->windowed.h;

menu = (style & WS_CHILDWINDOW) ? FALSE : (GetMenu(hwnd) != NULL);

AdjustWindowRectEx(&rect, style, menu, 0);

w = (rect.right - rect.left);

h = (rect.bottom - rect.top);

x = window->windowed.x + rect.left;

y = window->windowed.y + rect.top;

}

SetWindowLong(hwnd, GWL_STYLE, style);

SetWindowPos(hwnd, top, x, y, w, h, SWP_NOCOPYBITS);

}

int

WIN_SetWindowGammaRamp(_THIS, SDL_Window * window, const Uint16 * ramp)

{

SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);

SDL_DisplayData *data = (SDL_DisplayData *) display->driverdata;

HDC hdc;

BOOL succeeded = FALSE;

hdc = CreateDC(data->DeviceName, NULL, NULL, NULL);

if (hdc) {

succeeded = SetDeviceGammaRamp(hdc, (LPVOID)ramp);

if (!succeeded) {

WIN_SetError("SetDeviceGammaRamp()");

}

DeleteDC(hdc);

}

return succeeded ? 0 : -1;

}

int

WIN_GetWindowGammaRamp(_THIS, SDL_Window * window, Uint16 * ramp)

{

SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);

SDL_DisplayData *data = (SDL_DisplayData *) display->driverdata;

HDC hdc;

BOOL succeeded = FALSE;

hdc = CreateDC(data->DeviceName, NULL, NULL, NULL);

if (hdc) {

succeeded = GetDeviceGammaRamp(hdc, (LPVOID)ramp);

if (!succeeded) {

WIN_SetError("GetDeviceGammaRamp()");

}

DeleteDC(hdc);

}

return succeeded ? 0 : -1;

}

void

WIN_SetWindowGrab(_THIS, SDL_Window * window, SDL_bool grabbed)

{

HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;

if (grabbed) {

RECT rect;

GetClientRect(hwnd, &rect);

ClientToScreen(hwnd, (LPPOINT) & rect);

ClientToScreen(hwnd, (LPPOINT) & rect + 1);

ClipCursor(&rect);

} else {

ClipCursor(NULL);

}

if (window->flags & SDL_WINDOW_FULLSCREEN) {

UINT flags = SWP_NOCOPYBITS | SWP_NOMOVE | SWP_NOSIZE;

if (!(window->flags & SDL_WINDOW_SHOWN)) {

flags |= SWP_NOACTIVATE;

}

WIN_SetWindowPositionInternal(_this, window, flags);

}

}

void

WIN_DestroyWindow(_THIS, SDL_Window * window)

{

SDL_WindowData *data = (SDL_WindowData *) window->driverdata;

if (data) {

ReleaseDC(data->hwnd, data->hdc);

if (data->created) {

DestroyWindow(data->hwnd);

} else {

/* Restore any original event handler... */

if (data->wndproc != NULL) {

#ifdef GWLP_WNDPROC

SetWindowLongPtr(data->hwnd, GWLP_WNDPROC,

(LONG_PTR) data->wndproc);

#else

SetWindowLong(data->hwnd, GWL_WNDPROC,

(LONG_PTR) data->wndproc);

#endif

}

}

SDL_free(data);

}

}

SDL_bool

WIN_GetWindowWMInfo(_THIS, SDL_Window * window, SDL_SysWMinfo * info)

{

HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;

if (info->version.major <= SDL_MAJOR_VERSION) {

info->subsystem = SDL_SYSWM_WINDOWS;

info->info.win.window = hwnd;

return SDL_TRUE;

} else {

SDL_SetError("Application not compiled with SDL %d.%d\n",

SDL_MAJOR_VERSION, SDL_MINOR_VERSION);

return SDL_FALSE;

}

}

/*

* Creates a HelperWindow used for DirectInput events.

*/

int

SDL_HelperWindowCreate(void)

{

HINSTANCE hInstance = GetModuleHandle(NULL);

WNDCLASS wce;

/* Make sure window isn't created twice. */

if (SDL_HelperWindow != NULL) {

return 0;

}

/* Create the class. */

SDL_zero(wce);

wce.lpfnWndProc = DefWindowProc;

wce.lpszClassName = (LPCWSTR) SDL_HelperWindowClassName;

wce.hInstance = hInstance;

/* Register the class. */

SDL_HelperWindowClass = RegisterClass(&wce);

if (SDL_HelperWindowClass == 0) {

return WIN_SetError("Unable to create Helper Window Class");

}

/* Create the window. */

SDL_HelperWindow = CreateWindowEx(0, SDL_HelperWindowClassName,

SDL_HelperWindowName,

WS_OVERLAPPED, CW_USEDEFAULT,

CW_USEDEFAULT, CW_USEDEFAULT,

CW_USEDEFAULT, HWND_MESSAGE, NULL,

hInstance, NULL);

if (SDL_HelperWindow == NULL) {

UnregisterClass(SDL_HelperWindowClassName, hInstance);

return WIN_SetError("Unable to create Helper Window");

}

return 0;

}

/*

* Destroys the HelperWindow previously created with SDL_HelperWindowCreate.

*/

void

SDL_HelperWindowDestroy(void)

{

HINSTANCE hInstance = GetModuleHandle(NULL);

/* Destroy the window. */

if (SDL_HelperWindow != NULL) {

if (DestroyWindow(SDL_HelperWindow) == 0) {

WIN_SetError("Unable to destroy Helper Window");

return;

}

SDL_HelperWindow = NULL;

}

/* Unregister the class. */

if (SDL_HelperWindowClass != 0) {

if ((UnregisterClass(SDL_HelperWindowClassName, hInstance)) == 0) {

WIN_SetError("Unable to destroy Helper Window Class");

return;

}

SDL_HelperWindowClass = 0;

}

}

void WIN_OnWindowEnter(_THIS, SDL_Window * window)

{

#ifdef WM_MOUSELEAVE

SDL_WindowData *data = (SDL_WindowData *) window->driverdata;

TRACKMOUSEEVENT trackMouseEvent;

if (!data || !data->hwnd) {

/* The window wasn't fully initialized */

return;

}

trackMouseEvent.cbSize = sizeof(TRACKMOUSEEVENT);

trackMouseEvent.dwFlags = TME_LEAVE;

trackMouseEvent.hwndTrack = data->hwnd;

TrackMouseEvent(&trackMouseEvent);

#endif /* WM_MOUSELEAVE */

}

#endif /* SDL_VIDEO_DRIVER_WINDOWS */

/* vi: set ts=4 sw=4 expandtab: */